最近在用sbt開發springmvc應用,其實主要是爲了能用scala,由於對spring還不是很熟,資料裏都是用Java寫的,因此暫時倒尚未用scala寫。今天配置aop,大概代碼以下: java
@Around(value = "execution(* get(..)) && args(bookId, session) && @annotation(m)") public Object doGetBook(ProceedingJoinPoint pjp, long bookId, HttpSession session, MonitorPerformance m) throws Throwable {}
@RequestMapping(value = "/1", method = RequestMethod.GET) @ResponseBody @MonitorPerformance(2) public String get(@RequestParam(value = "bookId", required = false) long bookId, HttpSession session) {}
不過container:restart的時候老是報異常: spring
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'config': BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.aop.aspectj.AspectJAdviceParameterNameDiscoverer$AmbiguousBindingException: Found 2 candidate variable names but only one candidate binding slot when matching primitive args at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:471) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'config': BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.aop.aspectj.AspectJAdviceParameterNameDiscoverer$AmbiguousBindingException: Still 2 unbound args at this(),target(),args() binding stage, with no way to determine between them at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:471) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
javacOptions ++= Seq("-g")
@Around(value = "execution(* get(..)) && args(bookId, session) && @annotation(m)", argNames="pjp, bookId, session, m") public Object doGetBook(ProceedingJoinPoint pjp, Long bookId, HttpSession session, MonitorPerformance m) throws Throwable {}
這樣就能夠把sbt裏javaOptions去掉!而後訪問的時候又異常! session
nested exception is java.lang.IllegalStateException: No parameter name specified for argument of type [java.lang.Long], and no parameter name information found in class file either
@RequestMapping(value = "/1", method = RequestMethod.GET) @ResponseBody @MonitorPerformance(2) public String get(@RequestParam(value = "bookId", required = false) Long bookId, HttpSession session) {}
required默認爲true,不修改的話,不帶參數會報錯的,爲了測試簡單我修改成false。 mvc
總結就是配置的時候儘可能全面,不要依賴編譯時候會有debug信息。由於method的參數,若是沒有保留debug信息,是不知道名字的。對於class類型的話,到能夠經過Class信息判斷,可是對於primitive以及對於的wrapper類,還有String,都是不行的。 app